CN104205597B - Power conversion device - Google Patents
Power conversion device Download PDFInfo
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- CN104205597B CN104205597B CN201280071206.2A CN201280071206A CN104205597B CN 104205597 B CN104205597 B CN 104205597B CN 201280071206 A CN201280071206 A CN 201280071206A CN 104205597 B CN104205597 B CN 104205597B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/2932—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage, current or power
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Control Of Electrical Variables (AREA)
Abstract
In the present invention, including the 1st period voltage Vin more than the 1st positive reference voltage, 2nd periods of the voltage Vin below the 2nd negative reference voltage, and 3rd periods of the voltage Vin between the 1st reference voltage and the 2nd reference voltage, in during 1st, make the 2nd switch element and the 3rd switching elements conductive, and the 1st switch element and the 4th switch element is alternately carried out turning on and is ended, in during 2nd, make the 1st switch element and the 4th switching elements conductive, and the 2nd switch element and the 3rd switch element is alternately carried out turning on and is ended, in during 3rd, make the 1st switch element and the 2nd switching elements conductive, and end the 3rd switch element and the 4th switch element, so as to while the release way for discharging the inductive energy storage that reactor is put aside is ensured, voltage Vin is depressurized to defined alternating voltage Vo.
Description
Technical field
The present invention relates to the power conversion device that the voltage to AC power carries out buck or boost and output AC voltage.
Background technology
The power conversion device of buck or boost and output AC voltage is carried out as the voltage to AC power, it is known to
The AC chopper of voltage-dropping type or booster type.Figure 11 is for illustrating the phase buck type AC chopping disclosed in patent document 1
The figure of device.
In figure, 1 is single phase alternating current power supply, and 2 and 3 be two-way switch, and 4 be load.
Two-way switch 2 is the circuit that switch element S1, S2 differential concatenation is formed by connecting, wherein, switch element S1, S2 difference
It is connected in parallel with diode reverse.Two-way switch 3 is the circuit that switch element S3, S4 differential concatenation is formed by connecting, wherein, switch
Element S3, S4 are connected in parallel with diode reverse respectively.Two-way switch 2 and two-way switch 3 are connected in series, and are connected to blow-up
Flow the two ends of power supply 1.Load 4 is connected in series by resistance R and reactor L.Load 4 is connected to the two ends of two-way switch 3.
In the structure shown here, two-way switch 2 and two-way switch 3 are alternately repeated based on the signal after pulsewidth modulation
Carry out switch motion.In addition, during being provided with stopping in the signal of two-way switch 2 and two-way switch 3, with cause this two
Individual two-way switch will not be simultaneously turned at the time of switched conductive and cut-off.By the action, the voltage to AC power 1 is entered
The defined alternating voltage obtained after row decompression puts on load 4.
Figure 12 is the figure for illustrating the single-phase step-up type AC chopper disclosed in patent document 1.
In figure, 1 is single phase alternating current power supply, and 2 and 3 be two-way switch, and 4 be load, and 5 be reactor, and 6 be capacitor.
The structure of two-way switch 2 and two-way switch 3 is identical with above-mentioned voltage-dropping type AC chopper.Reactor 5 and two-way opened
The series circuit of pass 2 is connected to the two ends of AC power 1.Also, the series circuit of two-way switch 3 and capacitor 6 is connected to double
To the two ends of switch 2.Load 4 is connected to the two ends of capacitor 6.
In the structure shown here, two-way switch 2 and two-way switch 3 are alternately repeated based on the signal after pulsewidth modulation
Carry out switch motion.In addition, during being provided with stopping in the signal of two-way switch 2 and two-way switch 3, to cause two
Two-way switch will not be simultaneously turned at the time of switched conductive and cut-off.By the action, by the voltage progress to AC power 1
The defined alternating voltage obtained after boosting puts on load 4.
However, in the case of voltage-dropping type AC chopper, if two-way switch 2 and two-way switch 3 during stopping simultaneously
Cut-off, then by the path of the release reactor L inductive energy storages put aside is blocked.Now, wave is produced at reactor L two ends
Gush voltage.In addition, in the case of booster type AC chopper, if two-way switch 2 is cut with two-way switch 3 during stopping simultaneously
Only, then the path for the inductive energy storage put aside by release reactor 5 is blocked.Now, wave is also produced at the two ends of reactor 5
Gush voltage.Then, two-way switch 2,3 is possible to damage because of the surge voltage produced by reactor L or reactor 5.
Disclosed in patent document 1 and suppress the method that the surge voltage is produced.According to patent document 1, to two-way switch
2nd, 3 conducting and cut-off when switching over, according to load current Io or source current Iin polarity, is provided with for constituting
Three periods that switch element S1~S4 of two-way switch 2,3 is individually turned on and ended.Three periods can respectively constitute
The release way for the inductive energy storage put aside in reactor L or reactor 5.As a result, the generation of surge voltage is suppressed.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2003-230277 publications
The content of the invention
The technical problems to be solved by the invention
However, it is necessary to according to load current Io or source current Iin polarity in the technology disclosed in patent document 1
To generate the control signal for switch element S1~S4 to be turned on and ended.But, because two-way switch 2,3 passes through example
Turned on such as impulse modulation control and blocking action, therefore, include ripple point in load current Io or source current Iin
Amount.Therefore, in the near zero-crossing point of electric current, it is difficult to correctly detect out load current Io or source current Iin polarity.By mistake
In the case of detecting restriction of current, by the inductive energy storage put aside in reactor L or reactor 5, surge voltage can be produced.
In addition, in small load, load current Io and source current Iin diminish.Therefore, in small load, it is more difficult to just
Really detect load current Io or source current Iin polarity.
Therefore, the AC chopper after the technology disclosed in patent document 1 is applied, in load current Io or source current
Iin near zero-crossing point, can not suppress the surge voltage produced by reactor L or reactor 5 sometimes.Also, in order to suppress
The surge voltage is, it is necessary to the control circuit of complexity.
In addition, in the technology disclosed in patent document 1, being provided with for individually being turned on to switch element S1~S4
With three periods of cut-off.Therefore, in the near zero-crossing point of supply voltage, it is necessary to the stopping of three times compared with common situation
Period.Due to the obstruction during needing more stopping, therefore as AC chopper high frequency.
The present invention completes to solve the problem of above-mentioned prior art is present.That is, it is an object of the invention to carry
For a kind of AC chopper, even if including ripple component in electric current, it can also suppress to produce because of reactor L or reactor 5
Surge.
Solve the technical scheme of technical problem
, will be by being connected in series in alternating current for realizing that the 1st invention of above-mentioned purpose is following power conversion device
Alternating voltage obtained from 1st and the 2nd two-way switch at the two ends in source is alternately turned on and ended, which is supplied to, is connected to the 2nd pair
To the load of switch ends.In the power conversion device, the 1st two-way switch is by by the 1st switch element and the 2nd switch element string
Join or be connected in parallel and constitute, the 2nd two-way switch by by the 3rd switch element and the 4th switch elements in series or be connected in parallel and
Constitute.Also, the power conversion device is characterised by, when the voltage of AC power is in the 1st reference voltage and less than the 1st benchmark
When between the 2nd reference voltage of voltage, make the 1st switch element and the 2nd switching elements conductive of the 1st two-way switch, and make the 2nd pair
End to the 3rd switch element of switch and the 4th switch element, the voltage of AC power is thus supplied to load.Also, it is special
Levy and be, the 1st reference voltage is greater than zero voltage, the 2nd reference voltage is less than zero voltage.
2nd invention is characterised by, in the involved power conversion device of the 1st invention, by the voltage week of AC power
Phase be divided into the voltage of AC power more than the 1st reference voltage the 1st during, the voltage of AC power is in the 2nd reference voltage
The 3rd period of the 2nd following period and the voltage of AC power between the 1st reference voltage and the 2nd reference voltage.Also,
The power conversion device is characterised by, during after singulation each in, by the 1st~the 4th switch element is carried out conducting and
Cut-off control, by the voltage step-down of AC power to defined alternating voltage, is available to load.
Specifically, during the power conversion device is during the 1st, make the 2nd and the 3rd switching elements conductive, and make the 1st and the
4 switch elements are alternately carried out turning on and ended.The power conversion device leads the 1st and the 4th switch element in the 2nd period
It is logical, and the 2nd and the 3rd switch element is alternately carried out turning on and is ended.The power conversion device makes the 1st He in the 3rd period
2nd switching elements conductive, and end the 3rd and the 4th switch element.
3rd invention is characterised by, in the involved power conversion device of the 2nd invention, from the 1st period to the 3rd period
Switching and to during the 3rd switch in the 1st and the 2nd switch element while being carried out when being on during the 2nd.
4th invention is following power conversion device, in the power conversion device, reactor and the series connection of the 2nd two-way switch
The two ends of AC power are connected to, and the 1st two-way switch and capacitor are connected in series in the two ends of the 2nd two-way switch, will be logical
Cross alternating voltage obtained from the 1st and the 2nd two-way switch is alternately carried out turning on and ended and be supplied to and be connected to the electric capacity
The load at the two ends of device.In the power conversion device, the 1st two-way switch passes through by the 1st switch element and the 2nd switch elements in series
Or be connected in parallel and constitute, the 2nd two-way switch is by by the 3rd switch element and the 4th switch elements in series or being connected in parallel and structure
Into.Also, the power conversion device is characterised by, when the voltage of AC power is in the 1st reference voltage and less than the 1st benchmark electricity
When between the 2nd reference voltage of pressure, the 1st two-way switch is turned on, and end the 2nd two-way switch, thus by AC power
Voltage is supplied to load.And, it is characterised in that the 1st reference voltage is greater than zero voltage, and the 2nd reference voltage is less than zero
Voltage.
5th invention is characterised by, in the involved power conversion device of the 4th invention, by the voltage week of AC power
Phase be divided into the voltage of AC power more than the 1st reference voltage the 4th during, the voltage of AC power is in the 2nd reference voltage
The 6th period of the 5th following period and the voltage of AC power between the 1st reference voltage and the 2nd reference voltage.Also,
The power conversion device is characterised by, in each period after singulation, by first to the 1st~the 4th switch with defined pattern
Part carries out switch control, by the boost in voltage of AC power to defined alternating voltage, is available to load.
Specifically, the power conversion device makes the 1st switch element and the 4th switching elements conductive in the 4th period, and
The 2nd switch element and the 3rd switch element is set to be alternately carried out turning on and end.During the power conversion device is during the 5th, make the
2 switch elements and the 3rd switching elements conductive, and the 1st switch element and the 4th switch element is alternately carried out turning on and is ended.
The power conversion device makes the 1st switch element and the 2nd switching elements conductive, and make the 3rd and the 4th switch element in the 6th period
Cut-off.
6th invention is characterised by, in the involved power conversion device of the 5th invention, from the 4th period to the 6th period
Switching and to during the 6th switch in the 1st and the 2nd switch element while being carried out when being on during the 5th.
7th invention is following power conversion device, and the power conversion device uses any in two group of the 1st to the 6th invention
The power conversion device of item, is connected by V connections with three-phase alternating-current supply and threephase load and formed.
8th invention is following power conversion device, and the power conversion device uses any in three group of the 1st to the 6th invention
The power conversion device of item, is connected by Y connections with three-phase alternating-current supply and threephase load and formed.
The power conversion device for applying the present invention is that possess two two-way switch, and the voltage of AC power is depressured
Or the AC chopper of load is supplied to after boosting.
In the case where the power conversion device is voltage-dropping type AC chopper, the voltage cycle of AC power is divided into
During 1st~the 3rd, switch control is carried out to the 1st~the 4th switch element.
During 1st, the 2nd switch element and the 3rd switch element are in the conduction state, the 1st switch element and the 4th switch member
Part is alternately carried out turning on and ended.During this period, along with the blocking action of the 1st switch element, circuital current commutation is flowed through
3rd switch element.During 2nd, the 1st switch element and the 4th switch element are in the conduction state, and the 2nd switch element and the 3rd is opened
Element is closed to be alternately carried out turning on and end.During this period, along with the blocking action of the 2nd switch element, circuital current commutation
Flow through the 4th switch element.During 3rd, the 1st switch element and the 2nd switch element are in the conduction state, the 3rd switch element and
4th switch element is in cut-off state.In this period, circuital current flows through the 1st switch element or the 2nd switch element.
In addition, in the case where the power conversion device is booster type AC chopper, by the voltage cycle of AC power
During being divided into the 4th~the 6th, switch control is carried out to the 1st~the 4th switch element.
During 4th, the 1st switch element and the 4th switch element are in the conduction state, the 2nd switch element and the 3rd switch member
Part is alternately carried out turning on and ended.During this period, along with the blocking action of the 3rd switch element, circuital current commutation is flowed through
1st switch element.During 5th, the 2nd switch element and the 3rd switch element are in the conduction state, and the 1st switch element and the 4th is opened
Element is closed to be alternately carried out turning on and end.During this period, along with the blocking action of the 4th switch element, circuital current commutation
Flow through the 2nd switch element.During 6th, the 1st switch element and the 2nd switch element are in the conduction state, the 3rd and the 4th switch member
Part is in cut-off state.In this period, circuital current flows through the 1st switch element or the 2nd switch element.
Invention effect
Apply the power conversion device of the present invention and can be constituted in any control period and accumulated for discharging reactor
The release way of the inductive energy storage of storage.Therefore, applying the power conversion device of the present invention can suppress to produce because of reactor
Surge voltage.
Brief description of the drawings
Fig. 1 is the figure for illustrating embodiments of the present invention 1.
Fig. 2 is the figure for illustrating the embodiment of bilateral switching element.
Fig. 3 is the figure of the relation for account for voltage Vin Yu period 1~3.
Fig. 4 be for explanation during 1~3 with the figure of the relation of the action of switch element.
Fig. 5 is the figure for illustrating embodiments of the present invention 2.
Fig. 6 is the figure for illustrating embodiments of the present invention 3.
Fig. 7 is the figure for illustrating embodiments of the present invention 4.
Fig. 8 is the figure of the relation for account for voltage Vin Yu period 4~6.
Fig. 9 is the figure for illustrating embodiments of the present invention 5.
Figure 10 is the figure for illustrating embodiments of the present invention 6.
Figure 11 is the figure for illustrating the voltage-dropping type AC chopper involved by prior art.
Figure 12 is the figure for illustrating the booster type AC chopper involved by prior art.
Embodiment
Below, 1~Figure 10 of reference picture come describe in detail apply the present invention power conversion device embodiment.
Fig. 1 is the figure for illustrating the embodiment 1 for the power conversion device for applying the present invention.
In figure, 1 is single phase alternating current power supply, and 2 and 3 be two-way switch, and 4 be load, and 100 be control circuit.The embodiment
Involved power conversion device is that voltage Vo obtained from the voltage Vin to single phase alternating current power supply 1 is depressured is supplied to
The voltage-dropping type AC chopper of load.
Two-way switch 2 (the 1st two-way switch) is by switch element S1 (the 1st switch element) and switch element S2 (the 2nd switches
Element) circuit that is connected in antiparallel.Switch element S1 collector terminal side is set to the 1st terminal of two-way switch 2,
Switch element S1 emitter terminal side is set to the 2nd terminal of two-way switch 2.
Two-way switch 3 (the 2nd two-way switch) is by switch element S3 (the 3rd switch element) and switch element S4 (the 4th switches
Element) circuit that is connected in antiparallel.Switch element S4 collector terminal side is set to the 1st terminal of two-way switch 3,
Switch element S4 emitter terminal side is set to the 2nd terminal of two-way switch 3.
Switch element S1~S4 shown in figure is with the pressure-resistant IGBT of reverse blocking (Insulated Gate
Bipolar Transistor：Igbt).
But, two-way switch 2,3 is not limited to said structure.For example, two-way switch 2,3 can as shown in Fig. 2 (a),
It is configured to be formed by will be connected in antiparallel without two groups of circuits that the pressure-resistant IGBT of reverse blocking is connected with Diode series.
Also, two-way switch 2,3 can also be configured to by by without reverse blocking pressure-resistant IGBT and two as shown in Fig. 2 (b)
Two groups of circuit differential concatenations that pole pipe is connected in antiparallel are formed by connecting.Two-way switch 2,3 is acceptable as shown in Fig. 2 (c),
Using following structure：Two groups of IGBT bilateral switching elements being connected in parallel with diode reverse are by by MOSFET (Metal Oxide
Semiconductor Field Effect Transistor：Mos field effect transistor) it is anti-with diode
It is formed by connecting to two groups of circuit differential concatenations being connected in parallel.
It is also same for following other embodiment, two-way switch can also use said structure.
Two-way switch 2 and two-way switch 3 are connected in series in the two ends of AC power 1.Specifically, the 2nd of two-way switch 2
Terminal is connected with the 1st terminal of two-way switch 3.1st terminal of two-way switch 2 is connected with one end of AC power 1, two-way
2nd terminal of switch 3 is connected with the other end of AC power 1.
Load 4 is connected to the two ends of two-way switch 3.Load 4 is the circuit for being connected in series resistance R and reactor L.
Inductive components of the reactor L comprising resistance R and the inductive component of wiring.
The voltage Vin of the AC power 1 detected by voltage detector 301 is input to control circuit 100.Control circuit
100 generate signal G1~G4 for switch element S1~S4 to be turned on and ended based on voltage Vin.
Control circuit 100 when generating signal G1~G4, the voltage cycle of AC power 1 is divided into period 1~3
During these three.Fig. 3 is the figure of the relation for account for voltage Vin Yu period 1~3.Recorded in the lump in Fig. 3 and flow through load 4
Electric current Io.
During period 1 (the 1st during) is voltage Vin more than the 1st reference voltage.Period 2 (during the 2nd) is voltage
During Vin is below the 2nd reference voltage.Period 3 (during the 3rd) is that voltage Vin is less than the 1st reference voltage and more than the 2nd base
During quasi- voltage.
Wherein, the 1st reference voltage is set to the voltage of the value slightly larger than 0V.2nd reference voltage is set to be slightly smaller than
The voltage of 0V value.Thus, if setting the 1st and the 2nd reference voltage, the 3rd period can be set as that voltage Vin was limited
During before and after zero crossing.
For example, the voltage Vin of single phase alternating current power supply 1 is set into 250VAC, output voltage Vo is set to 200VAC.Also, will
1st reference voltage is set as 10V or so, and the 2nd reference voltage is set as -10V or so.In this case, period switching instant is produced
Raw output voltage Vo deviation (deviation of fundametal compoment) is 2V or so.Thus, if setting the 1st and the 2nd reference voltage,
It can make it that the influence to output voltage Vo wave distortion is smaller.
Fig. 4 be for explanation during 1~3 with the figure of the relation of switch element S1~S4 switch motion.
In period 1, control circuit 100 generation signal G2, G3, for making switch element S2, S3 be on all the time
State.In addition, control circuit 100 also generate signal G1, G4, for make switch element S1, S4 be alternately carried out conducting with
Blocking action.Signal G1, G4 is carried out pulsewidth modulation to export defined alternating voltage.
Switch to cut-off from conducting in switch element S1, switch element S4 from cut-off switch to conducting when, in two elements
Signal G1, G4 in be provided with make two elements and meanwhile end stopping during Td.Similarly, in switch element S4 from leading
It is logical to switch to cut-off, switch element S1 from cut-off switch to conducting when, being provided with the signal G1, G4 of two elements makes
The Td stopping that two elements end simultaneously during.During Td is set for following purpose during stopping, i.e.,：To switch element
At the time of S1, S4 conducting and cut-off are switched over, prevent from causing the short circuit of AC power 1 because two elements are simultaneously turned on.
Due to turning on switch element S1, along the path of 1 → switch element of AC power S1 → 4 → AC power of load 1
Flow through electric current Io.If switch element S1 ends, the electric current Io for flowing through switch element S1 is commutated into along 4 → switch element of load S3
The path flowing of → load 4.During Td, switch element S4 conducting and switched during stopping after switch element S1 cut-offs
During stopping after element S4 cut-offs in a period of Td, electric current Io continues along the road of above-mentioned 4 → switch element of load S3 → load 4
Flow in footpath.Then, if switch element S1 is turned on, the electric current Io for flowing through switch element S3 is commutated into along AC power 1 → switch
The path flowing of element S1 → 4 → AC power of load 1.
In addition, being switched to just from period 3 after period 1, electric current Io polarity is possible to be negative.Now, electric current Io edges
The path of AC power 1 → 4 → switch element of load S2 → AC power 1, or along load 4 → switch element S4 → load 4
Path flowing.
As described above, in period 1, electric current Io is repeated in conducting and blocking action along with switch element S1, S4
Commutation action.That is, it ensure that all the time by the path of the reactor L of release load 4 inductive energy storages put aside.Therefore, exist
In period 1, the surge voltage because of caused by the inductive energy storage that reactor L is put aside can be suppressed.
In period 2, control circuit 100 generation signal G1, G4, for making switch element S1, S4 be on all the time
State.In addition, control circuit 100 also generate signal G2, G3, for make switch element S2, S3 be alternately carried out conducting with
Blocking action.Signal G2, G3 is carried out pulsewidth modulation to export defined alternating voltage.
Switch to cut-off from conducting in switch element S2, switch element S3 from cut-off switch to conducting when, in two elements
Signal G2, G3 in be provided with make two elements and meanwhile end stopping during Td.Similarly, in switch element S3 from leading
It is logical to switch to cut-off, switch element S2 from cut-off switch to conducting when, being provided with the signal G2, G3 of two elements makes
The Td stopping that two elements end simultaneously during.
Due to switch element S2 conductings, flowed along the path of AC power 1 → 4 → switch element of load S2 → AC power 1
Overcurrent Io.If switch element S2 ends, flow through switch element S2 electric current Io commutate into along load 4 → switch element S4 →
The path flowing of load 4.During stopping after switch element S2 cut-offs during Td, switch element S3 conducting and switch member
During stopping after part S3 cut-offs in a period of Td, electric current Io continues along the path of above-mentioned 4 → switch element of load S4 → load 4
Flowing.Then, if switch element S1 turn on, flow through switch element S4 electric current Io commutate into along AC power 1 → load 4 →
The path flowing of switch element S2 → AC power 1.
In addition, being switched to just from period 3 after period 2, electric current Io polarity is possible to as just.Now, electric current Io edges
The path of 1 → switch element of AC power S1 → 4 → AC power of load 1, or 4 → switch element of load S3 → load 4
Flow in path.
As described above, in period 2, conducting and blocking action along with switch element S2, S3 repeatedly carry out electric current
Io commutation action.That is, the path for discharging the inductive energy storage that the reactor L of load 4 is put aside is ensure that all the time.Therefore,
In period 2, the surge voltage because of caused by the inductive energy storage that reactor L is put aside can be suppressed.
In period 3, control circuit 100 is controlled, so that switch element S1, S2 are in the conduction state all the time, is opened
Close element S3, S4 and be in cut-off state all the time.
In 3 during after period 1, electric current Io is along 1 → switch element of AC power S1 → 4 → AC power of load 1
Flow in path.In addition, in 3 during after period 2, electric current Io is along AC power 1 → 4 → switch element of load S2 → alternating current
The path flowing in source 1.Do not occur conducting and the blocking action of switch element in either event.Therefore, in period 3
In, surge voltage caused by the inductive energy storage put aside by reactor L will not be produced.
In addition, preferably being carried out from the switching of period 1 to period 3 at the time of switch element S1, S2 are simultaneously turned on.Equally
Ground, is preferably carried out from the switching of period 2 to period 3 at the time of switch element S1, S2 are simultaneously turned on.If entering the departure date at the moment
Between switching, then can maintain while conducting and the cut-off state of switch element to shift to period 3 in period 1 or period 2.
Therefore, because not switching conducting and the blocking action of switch element, it is therefore not necessary to during insertion stops at the moment.
As described above, AC power 1 near zero-crossing point be provided with the embodiment 1 of period 3 can be to because of reactor L
The generation of surge voltage is suppressed caused by the inductive energy storage put aside.In addition, in the present embodiment, in cutting for period
The moment is changed, the signal complicated without generation.
Fig. 5 is the figure for illustrating embodiments of the present invention 2.In present embodiment, using involved by two groups of embodiments 1
And phase buck type chopper, be the voltage-dropping type copped wave being formed by connecting with three-phase alternating-current supply and threephase load by V connections
Device.
In figure, 11 be three-phase alternating-current supply, and 21,22 and 31,32 be two-way switch, and 41 be threephase load, and 101 be control electricity
Road.
In figure, AC power 11 is the three-phase alternating-current supply that R phases, S-phase and T-phase power supply are formed by connecting by Y connections.Load
41 be resistance Ru with reactor Lu series circuit (U phase loads), resistance Rv and reactor Lv series circuit (V phase loads),
And the threephase load that resistance Rw and reactor Lw series circuit (W phase loads) are formed by connecting by Y connections.
The series circuit of two-way switch 21,31 is connected between the R phase terminals of AC power 11 and S-phase terminal.Also, it is negative
The U phase loads and V phase loads that carry 41 are connected in series in the two ends of two-way switch 31.Two-way switch 21,31 and it is made up of them
Series circuit structure and embodiment 1 in two-way switch 2,3 and the series circuit being made up of them structure it is identical, because
This omits detail explanation.
In addition, the series circuit of two-way switch 22,32 is connected between the T-phase terminal of AC power 11 and S-phase terminal.And
And, the W phase loads and V phase loads of load 41 are connected in series in the two ends of two-way switch 32.Two-way switch 22,32 and by them
The structure of the series circuit of composition and the structure phase of two-way switch 2,3 and the series circuit being made up of them in embodiment 1
Together, thus omit detail explanation.
301 be the voltage detector of the voltage between lines Vrs between the R phases and S-phase for detecting AC power 11.302 be detection
The voltage detector of voltage between lines Vts between the T-phase and S phase of AC power 11.Between the line detected by voltage detector 301
Voltage Vrs and the voltage between lines Vts detected by voltage detector 302 are input into control circuit 101.
Voltage between lines Vrs voltage cycle is divided into period 1~3 by control circuit 101, and generates switch element S1~S4
Signal G1~G4.Also, voltage between lines Vts voltage cycle is divided into period 1~3 by control circuit 101, and is generated
Switch element S5~S8 signal G5~G8.Control the generation signal of circuit 101 G1~G4 principle and generation grid
Pole signal G5~G8 principle is identical with the situation of embodiment 1, therefore the description thereof will be omitted.
In present embodiment, voltage between lines Vrs, Vts near zero-crossing point are also provided with period 3 respectively.Therefore, this reality
Apply in mode, the surge voltage because caused by loading the inductive energy storage that 41 reactor Lu, Lv and Lw are put aside can be suppressed
Produce.In addition, in the present embodiment, in the switching instant of period, the signal complicated without generation.
Fig. 6 is the figure for illustrating embodiments of the present invention 3.In present embodiment, using involved by three groups of embodiments 1
And phase buck type chopper, be the voltage-dropping type copped wave being formed by connecting with three-phase alternating-current supply and threephase load by Y connections
Device.
In figure, 12 be three-phase alternating-current supply, and 21~23 and 31~33 be two-way switch, and 42 be threephase load, and 102 be control
Circuit.
In figure, AC power 12 is the three-phase alternating-current supply that R phases, S-phase and T-phase power supply are formed by connecting by Y connections, is had
Neutral point.Load 42 is the series circuit of resistance Ru and reactor Lu series circuit (U phase loads), resistance Rv and reactor Lv
The threephase load that (V phase loads) and resistance Rw and reactor Lw series circuit (W phase loads) are formed by connecting by Y connections.
Load 42 also has neutral point.And the neutral point of AC power 12 is connected with the neutral point of load 42.
The series circuit of two-way switch 21,31 is connected between the R phase terminals of AC power 12 and neutral terminal.And
The U phase loads of load 42 are connected to the two ends of two-way switch 31.Two-way switch 21,31 and the series circuit that is made up of them
The structure of two-way switch 2,3 and the series circuit being made up of them is identical in structure and embodiment 1, therefore it is detailed to omit its
Explanation.
In addition, the series circuit of two-way switch 22,32 be connected to AC power 11 S-phase terminal and neutral terminal it
Between.And the V phase loads of load 42 are connected to the two ends of two-way switch 32.Two-way switch 22,32 and the string being made up of them
The structure for the series circuit for joining two-way switch 2,3 in structure and the embodiment 1 of circuit and being made up of them is identical, therefore saves
Omit detail explanation.
In addition, the series circuit of two-way switch 23,33 be connected to AC power 11 T-phase terminal and neutral terminal it
Between.And the W phase loads of load 42 are connected to the two ends of two-way switch 33.Two-way switch 23,33 and the string being made up of them
The structure for the series circuit for joining two-way switch 2,3 in structure and the embodiment 1 of circuit and being made up of them is identical, therefore saves
Omit detail explanation.
301 be the voltage detector for the R phase voltages Vr for detecting AC power 11.302 be the S-phase electricity for detecting AC power 11
Press Vs voltage detector.303 be the voltage detector for the T-phase voltage Vt for detecting AC power 11.Examined by voltage detector 301
The voltage Vr measured, the voltage Vs detected by voltage detector 302 and the voltage Vt detected by voltage detector 303
It is input into control circuit 102.
Voltage Vr voltage cycle is divided into period 1~3 by control circuit 102, and generates switch element S1~S4 grid
Pole signal G1~G4.Also, voltage Vs voltage cycle is divided into period 1~3 by control circuit 102, and generates switch element
S5~S8 signal G5~G8.Voltage Vt voltage cycle is also divided into period 1~3 by control circuit 102, and generation is opened
Close element S9~S12 signal G9~G12.Controlled in period 1~3 generation of circuit 102 signal G1~G4 principle,
The principle for generating signal G5~G8 and the principle for generating signal G9~G12 are identical with the situation of embodiment 1,
Therefore the description thereof will be omitted.
In present embodiment, voltage Vr, Vs and Vt near zero-crossing point are also provided with period 3 respectively.Therefore, this implementation
In mode, the production of the surge voltage because caused by loading the inductive energy storage that 42 reactor Lu, Lv and Lw are put aside can be suppressed
It is raw.In addition, in the present embodiment, in the switching instant of period, the signal complicated without generation.
Fig. 7 is the figure for illustrating the embodiment 4 for the power conversion device for applying the present invention.
In figure, 1 is single phase alternating current power supply, and 2 and 3 be two-way switch, and 4 be load, and 5 be reactor, and 6 be capacitor, and 103 are
Control circuit.Power conversion device involved by the embodiment be the voltage Vin to single phase alternating current power supply 1 is boosted and
Obtained voltage Vo is supplied to the booster type AC chopper of load.
Two-way switch 2 (the 1st two-way switch) is switch element S1 (the 1st switch element) and switch element S2 (the 2nd switch members
Part) circuit that is connected in antiparallel.Switch element S1 collector terminal side is set to the 1st terminal of two-way switch 2, will
Switch element S1 emitter terminal side is set to the 2nd terminal of two-way switch 2.
Two-way switch 3 (the 2nd two-way switch) is switch element S3 (the 3rd switch element) and switch element S4 (the 4th switch members
Part) circuit that is connected in antiparallel.Switch element S4 collector terminal side is set to the 1st terminal of two-way switch 3, will
Switch element S4 emitter terminal side is set to the 2nd terminal of two-way switch 3.
Also, switch element S1~S4 is with the pressure-resistant IGBT of reverse blocking.
Reactor 5 and two-way switch 3 are connected in series in the two ends of AC power 1.Specifically, one end of reactor 5 connects
One end of AC power 1 is connected to, the other end of reactor 5 is connected to the 2nd terminal of two-way switch 3.Also, two-way switch 3
1st terminal is connected to the other end of AC power 1.
Two-way switch 2 and capacitor 6 are connected in series in the mode in parallel with two-way switch 3.Specifically, two-way switch 3
The 2nd terminal be connected with the 1st terminal of two-way switch 2.Also, one end of capacitor 6 is connected to the 2nd end of two-way switch 2
Son, and the other end of capacitor 6 is connected to the 1st terminal of two-way switch 3.
Load 4 is connected in parallel with capacitor 6.Load 4 is the circuit that resistance R and reactor L is connected in series.Reactor
Inductive component comprising resistance R and the inductive component of wiring in L.
The voltage Vin of the AC power 1 detected by voltage detector 301 is input into control circuit 103.Control circuit
103 generate signal G1~G4 for switch element S1~S4 to be turned on and ended based on voltage Vin.
Circuit 103 is controlled when generating signal G1~G4, it is identical with embodiment 1, by the voltage week of AC power 1
Phase is divided into period 4~6 during these three.During period 4 (the 4th during) is voltage Vin more than the 1st reference voltage.Phase
Between during 5 (5 during) are voltage Vin below the 2nd reference voltage.Period 6 (during the 6th) is that voltage Vin is less than the 1st base
Quasi- voltage and more than during the 2nd reference voltage.
Wherein, the 1st reference voltage is set to the voltage of the value slightly larger than 0V.2nd reference voltage is set to be slightly smaller than
The voltage of 0V value.The the 1st and the 2nd reference voltage is set if so, then the 6th period can be set as that voltage Vin was limited
During before and after zero crossing.
For example, the voltage Vin of single phase alternating current power supply 1 is set into 150VAC, output voltage Vo is set to 200VAC.Also,
1st reference voltage is set as 10V or so, the 2nd reference voltage is set as -10V or so.In this case, cutting in period
The output voltage Vo changed produced by the moment deviation (deviation of fundametal compoment) is 3V or so.The the 1st and the 2nd base is set if so
Quasi- voltage, then can make it that the influence of wave distortion to output voltage Vo is smaller.
Fig. 8 be for explanation during 4~6 with switch element S1~S4 conducting and the figure of the relation of blocking action.
In period 4, the control generation of circuit 103 signal G1, G4, signal G1, G4 be used to making switch element S1,
S4 is in the conduction state all the time.In addition, control circuit 103 also generates signal G2, G3, the signal G2, G3 are for making out
Close element S2, S3 and be alternately carried out switch motion.Signal G2, G3 is carried out pulsewidth modulation to export defined alternating voltage.
Switch to cut-off from conducting in switch element S2, switch element S3 from cut-off switch to conducting when, in two elements
Signal G2, G3 in be provided with make two elements and meanwhile end stopping during Td.Similarly, in switch element S3 from leading
It is logical to switch to cut-off, switch element S2 from cut-off switch to conducting when, being provided with the signal G2, G3 of two elements makes
The Td stopping that two elements end simultaneously during.During Td is set for following purpose during stopping, i.e.,：To switch element
At the time of S2, S3 conducting and cut-off are switched over, prevent from causing the short circuit of capacitor 6 because two elements are simultaneously turned on.
Due to switch element S3 conductings, along the path of 1 → reactor of AC power, 5 → switch element S3 → AC power 1
Flow through electric current Iin.If switch element S3 ends, flow through switch element S3 electric current Iin commutations and along 1 → reactance of AC power
The path flowing of 5 → switch element of device S1 → 4 → AC power of load 1.Switch element S3 cut-off after stopping during Td, open
During stopping during closing element S2 conducting and after switch element S2 cut-offs in a period of Td, electric current Iin continues along above-mentioned
The path flowing of 1 → reactor of AC power, 5 → switch element S1 → 4 → AC power of load 1.Then, if switch element S3
Conducting, then flow through switch element S1 electric current Iin commutations and along 1 → reactor of AC power, 5 → switch element S3 → alternating current
The path flowing in source 1.
In addition, being switched to just from period 6 after period 4, electric current Iin polarity is possible to be negative.Now, electric current Iin
Along the path of AC power 1 → 4 → switch element of load S2 → AC power 1, or 1 → switch element of AC power S4 → electricity
The path flowing of anti-5 → AC power of device 1.
As described above, in period 4, conducting and blocking action along with switch element S2, S3 repeatedly carry out electric current
Iin commutation action.That is, the path for discharging the inductive energy storage that reactor 5 is put aside is ensure that all the time.Therefore, in period 4
In, the surge voltage because of caused by the inductive energy storage that reactor 5 is put aside can be suppressed.
In period 5, the control generation of circuit 103 signal G2, G3, signal G2, G3 be used to making switch element S2,
S3 is in the conduction state all the time.In addition, control circuit 103 also generates signal G1, G4, the signal G1, G4 are for making
Switch element S1, S4 are alternately carried out conducting and blocking action.Pulsewidth modulation is carried out to signal G1, G4 defined to export
Alternating voltage.
Switch to cut-off from conducting in switch element S1, switch element S4 from cut-off switch to conducting when, in two elements
Signal G1, G4 in be provided with make two elements and meanwhile end stopping during Td.Similarly, in switch element S4 from leading
It is logical to switch to cut-off, switch element S1 from cut-off switch to conducting when, being provided with the signal G1, G4 of two elements makes
The Td stopping that two elements end simultaneously during.
Due to switch element S4 conductings, along the path of 1 → switch element of AC power S4 → 5 → AC power of reactor 1
Flow through electric current Iin.If switch element S4 ends, the electric current Iin for flowing through switch element S4 is commutated into along AC power 1 → load
The path flowing of 4 → switch element S2 → 5 → AC power of reactor 1.Switch element S2 cut-off after stopping during Td, open
During stopping during closing element S3 conducting and after switch element S3 cut-offs in a period of Td, electric current Io continues along above-mentioned negative
Carry the path flowing of 4 → switch element S4 → load 4.Then, if switch element S1 is turned on, switch element S4 electric current is flowed through
Io commutates into the path flowing along AC power 1 → 4 → switch element of load S2 → AC power 1.
In addition, being switched to just from period 6 after period 5, electric current Iin polarity is possible to as just.Now, electric current Iin
Along the path of 1 → switch element of AC power S1 → 4 → AC power of load 1, or 1 → reactor of AC power 5 → switch
The path flowing of element S3 → AC power 1.
As described above, in period 5, conducting and blocking action along with switch element S1, S4 repeatedly carry out electric current
Iin commutation action.That is, the path for discharging the inductive energy storage that anti-device 5 is put aside is ensure that all the time.Therefore, in period 5
In, the surge voltage because of caused by the inductive energy storage that reactor L is put aside can be suppressed.
In period 6, control circuit 103 is controlled, so that switch element S1, S2 are in the conduction state all the time, is opened
Close element S3, S4 and be in cut-off state all the time.
In 6 during after period 4, electric current Iin is along 1 → reactor of AC power, 5 → switch element S1 → load 4 → friendship
Flow the path flowing of power supply 1.In addition, in 6 during after period 5, electric current Iin is along AC power 1 → 4 → switch element of load
The path flowing of S2 → 5 → AC power of reactor 1.Do not occur the conducting and cut-off of switch element in either event
Action.Therefore, in period 6, surge voltage caused by the inductive energy storage put aside by reactor 5 will not be produced.
In addition, preferably being carried out from the switching of period 4 to period 6 at the time of switch element S1, S2 are simultaneously turned on.Equally
Ground, from the switching of period 5 to period 6 it is also preferred that being carried out at the time of switch element S1, S2 are simultaneously turned on.If being carried out at the moment
The switching of period, then to 3 turns of period while can maintaining conducting and the cut-off state of switch element in period 1 or period 2
Move.Therefore, because do not switch conducting and the blocking action of switch element, it is therefore not necessary to generate the signal of complexity, for example without
Need to the moment insertion stop during etc..
As described above, AC power 1 near zero-crossing point be provided with the embodiment 4 of period 6 can be to because of reactor 5
The generation of surge voltage is suppressed caused by the inductive energy storage put aside.In addition, in the present embodiment, in cutting for period
The moment is changed, the signal complicated without generation.
Fig. 9 is the figure for illustrating embodiments of the present invention 5.In present embodiment, using involved by two groups of embodiments 4
And single-phase step-up type chopper, be the booster type chopper being formed by connecting with three-phase alternating-current supply and threephase load by V connections.
In figure, 11 be three-phase alternating-current supply, and 21,22 and 31,32 be two-way switch, and 41 be threephase load, and 51~53 be electricity
Anti- device, 61~63 be capacitor, and 104 be control circuit.
AC power 11 is the three-phase alternating-current supply that R phases, S-phase and T-phase power supply are formed by connecting by Y connections.Loading 41 is
Resistance Ru and reactor Lu series circuit (U phase loads), resistance Rv and reactor Lv series circuit (V phase loads) and
The threephase load that resistance Rw and reactor Lw series circuit (W phase loads) are formed by connecting by Y connections.
The series circuit being made up of reactor 51 with two-way switch 31 is connected to the R phases of AC power 11 via reactor 52
Between terminal and S-phase terminal.Also, the series circuit being made up of two-way switch 21 and capacitor 61 is connected to two-way switch 31
Two ends.The structure of two-way switch 31 and the series circuit being made up of reactor 51 with two-way switch 31 with it is two-way in embodiment 4
Switch 3 and identical with the structure for the series circuit that two-way switch 3 is constituted by reactor 5, therefore description is omitted.In addition,
The structure of two-way switch 21 and the series circuit being made up of two-way switch 21 and capacitor 61 and two-way switch 2 in embodiment 4
It is identical with the structure for the series circuit that capacitor 6 is constituted with by two-way switch 2, therefore description is omitted.
The U phase loads and V phase loads of load 41 are connected in series in the two ends of capacitor 61.
In addition, the series circuit being made up of reactor 53 and two-way switch 32 is connected to AC power 11 via reactor 52
T-phase terminal and S-phase terminal between.Also, the series circuit being made up of two-way switch 22 and capacitor 63 is connected to two-way opened
The two ends of pass 32.The structure of two-way switch 32 and the series circuit being made up of reactor 53 and two-way switch 32 and embodiment 4
Middle two-way switch 3 and identical with the structure for the series circuit that two-way switch 3 is constituted by reactor 5, therefore description is omitted.
In addition, the structure of two-way switch 22 and the series circuit being made up of two-way switch 22 with capacitor 62 with it is two-way in embodiment 4
Switch 2 and identical with the structure for the series circuit that capacitor 6 is constituted by two-way switch 2, therefore description is omitted.
The W phase loads and V phase loads of load 41 are connected in series in the two ends of capacitor 62.
Also, capacitor 63 is connected to the two ends of the series circuit of capacitor 61,62.
301 be the voltage detector of the voltage between lines Vrs between the R phases and S-phase for detecting AC power 11.302 be detection
The voltage detector of voltage between lines Vts between the T-phase and S phase of AC power 11.Between the line detected by voltage detector 301
Voltage Vrs and the voltage between lines Vts detected by voltage detector 302 are input into control circuit 104.
Voltage between lines Vrs voltage cycle is divided into period 4~6 by control circuit 104, and generates switch element S1~S4
Signal G1~G4.Also, voltage between lines Vts voltage cycle is divided into period 4~6 by control circuit 104, and is generated
Switch element S5~S8 signal G5~G8.Control the generation signal of circuit 104 G1~G4 principle and generation grid
Pole signal G5~G8 principle is identical with the situation of embodiment 1, therefore the description thereof will be omitted.
In present embodiment, voltage between lines Vrs, Vts near zero-crossing point are provided with period 6.Therefore, present embodiment
In, the generation of the surge voltage because of caused by the inductive energy storage that reactor 51~53 is put aside can be suppressed.In addition,
In present embodiment, in the switching instant of period, the signal complicated without generation.
Figure 10 is the figure for illustrating embodiments of the present invention 6.In present embodiment, using involved by three groups of embodiments 4
And single-phase step-up type chopper, be the booster type chopper being formed by connecting with three-phase alternating-current supply and threephase load by Y connections.
In figure, 12 be three-phase alternating-current supply, and 21~23 and 31~33 be two-way switch, and 42 be threephase load, and 51~53 are
Reactor, 61~63 be capacitor, and 105 be control circuit.
AC power 12 is the three-phase alternating-current supply that R phases, S-phase and T-phase power supply are formed by connecting by Y connections, with neutrality
Point.Load 42 is resistance Ru and reactor Lu series circuit (U phase loads), resistance Rv and reactor Lv series circuit (V phases
Load) and resistance Rw and reactor Lw the threephase load that is formed by connecting by Y connections of series circuit (W phase loads).Load
42 also have neutral point.And the neutral point of AC power 12 is connected with the neutral point of load 42.
The series circuit of reactor 51 and two-way switch 31 be connected to the R phase terminals of AC power 12 and neutral terminal it
Between.Also, the series circuit of two-way switch 21 and capacitor 61 is connected to the two ends of two-way switch 31.The U phase loads of load 42
It is connected to the two ends of capacitor 61.The structure and reality of two-way switch 31 and the series circuit being made up of reactor 51 and two-way switch 31
Apply in mode 4 two-way switch 3 and identical with the structure for the series circuit that two-way switch 3 is constituted by reactor 5, therefore it is detailed to omit its
Describe in detail bright.In addition, the structure of two-way switch 21 and the series circuit being made up of two-way switch 21 and capacitor 61 and embodiment 4
Middle two-way switch 2 and identical with the structure for the series circuit that capacitor 6 is constituted by two-way switch 2, therefore description is omitted.
The series circuit of reactor 52 and two-way switch 32 be connected to the S-phase terminal of AC power 12 and neutral terminal it
Between.Also, the series circuit of two-way switch 22 and capacitor 62 is connected to the two ends of two-way switch 32.The V phase loads of load 42
It is connected to the two ends of capacitor 62.The structure and reality of two-way switch 32 and the series circuit being made up of reactor 52 and two-way switch 32
Apply in mode 4 two-way switch 3 and identical with the structure for the series circuit that two-way switch 3 is constituted by reactor 5, therefore it is detailed to omit its
Describe in detail bright.In addition, the structure of two-way switch 22 and the series circuit being made up of two-way switch 22 and capacitor 62 and embodiment 4
Middle two-way switch 2 and identical with the structure for the series circuit that capacitor 6 is constituted by two-way switch 2, therefore description is omitted.
The series circuit of reactor 53 and two-way switch 33 be connected to the T-phase terminal of AC power 12 and neutral terminal it
Between.Also, the series circuit of two-way switch 23 and capacitor 63 is connected to the two ends of two-way switch 33.The W phase loads of load 42
It is connected to the two ends of capacitor 63.The structure of two-way switch 33 and the series circuit being made up of reactor 53 and two-way switch 33 with
Two-way switch 3 and identical with the structure for the series circuit that two-way switch 3 is constituted by reactor 5 in embodiment 4, therefore omit it
Describe in detail.In addition, the structure and embodiment 4 of the series circuit that two-way switch 23 and two-way switch 23 are constituted with capacitor 63
Middle two-way switch 2 and identical with the structure for the series circuit that capacitor 6 is constituted by two-way switch 2, therefore description is omitted.
301 be the voltage detector for the R phase voltages Vr for detecting AC power 11.302 be the S-phase electricity for detecting AC power 11
Press Vs voltage detector.303 be the voltage detector for the T-phase voltage Vt for detecting AC power 11.Examined by voltage detector 301
The voltage Vr measured, the voltage Vs detected by voltage detector 302 and the voltage Vt detected by voltage detector 303
It is input into control circuit 105.
Voltage Vr voltage cycle is divided into period 4~6 by control circuit 105, and generates switch element S1~S4 grid
Pole signal G1~G4.Also, voltage Vs voltage cycle is divided into period 4~6 by control circuit 105, and generates switch element
S5~S8 signal G5~G8.Voltage Vt voltage cycle is also divided into period 4~6 by control circuit 105, and generation is opened
Close element S9~S12 signal G9~G12.Controlled in period 4~6 generation of circuit 105 signal G1~G4 principle,
The principle for generating signal G5~G8 and the principle for generating signal G9~G12 are identical with the situation of embodiment 1,
Therefore the description thereof will be omitted.
In present embodiment, voltage Vr, Vs and Vt near zero-crossing point are also provided with period 6 respectively.Therefore, this implementation
In mode, the production of the surge voltage because caused by loading the inductive energy storage that 42 reactor Lu, Lv and Lw are put aside can be suppressed
It is raw.In addition, in the present embodiment, in the switching instant of period, the signal complicated without generation.
Industrial practicality
The present invention can be used in the AC chopper that buck or boost and output AC voltage are carried out to the voltage of AC power.
Label declaration
1 single phase alternating current power supply
11,12 three-phase alternating-current supplies
2,21~23 two-way switch
3,31~33 two-way switch
4 single-phase loads
41,42 threephase loads
5,51~53 reactors
6,61~63 capacitors
100~105 control circuits
301~303 voltage detectors.
Claims (6)
1. a kind of power conversion device, will be replaced by the 1st and the 2nd two-way switch at the two ends to being connected in series in AC power
Alternating voltage obtained from being turned on and being ended is supplied to the load for being connected to the 2nd two-way switch two ends, and its feature exists
In,
1st two-way switch by by the 1st switch element and the 2nd switch elements in series or being connected in parallel and constituting,
2nd two-way switch by by the 3rd switch element and the 4th switch elements in series or being connected in parallel and constituting,
The voltage cycle of the AC power is divided into the voltage of the AC power more than the 1st reference voltage more than zero
The 1st during, the voltage of the AC power below minus 2nd reference voltage the 2nd during and the alternating current
3rd period of the voltage in source between the 1st reference voltage and the 2nd reference voltage,
During described 1st, make the 2nd switch element and the 3rd switching elements conductive, and make the 1st switch element
It is alternately carried out turning on and ends with the 4th switch element, in leads for the 1st switch element and the 4th switch element
When logical and cut-off is switched over, being provided with makes the 1st switch element and the 4th switch element while the withholding period ended
Between,
During described 2nd, make the 1st switch element and the 4th switching elements conductive, and make the 2nd switch element
Alternately turn on and end with the 3rd switch element, in the conducting of the 2nd switch element and the 3rd switch element
When being switched over cut-off, be provided with the stopping for making the 2nd switch element and the 3rd switch element end simultaneously during,
During described 3rd, make the 1st switch element and the 2nd switching elements conductive, and make the 3rd switch element
End with the 4th switch element,
The load will be supplied to after the voltage step-down of the AC power to defined alternating voltage.
2. power conversion device as claimed in claim 1, it is characterised in that
To the switching during the described 3rd during the described 1st, and from during the described 2nd to during the described 3rd switch in institute
The 1st switch element and the 2nd switch element are stated while being carried out when being on.
3. in a kind of power conversion device, the power conversion device, reactor and the 2nd two-way switch are connected in series in AC power
Two ends, and the 1st two-way switch and capacitor are connected in series in the two ends of the 2nd two-way switch, will be by the described 1st
Alternating voltage obtained from two-way switch and the 2nd two-way switch are alternately turned on and ended, which is supplied to, is connected to the electricity
The load at the two ends of container, it is characterised in that
1st two-way switch by by the 1st switch element and the 2nd switch elements in series or being connected in parallel and constituting,
2nd two-way switch by by the 3rd switch element and the 4th switch elements in series or being connected in parallel and constituting,
The voltage cycle of the AC power is divided into the voltage of the AC power more than the 1st reference voltage more than zero
The 4th during, the voltage of the AC power below minus 2nd reference voltage the 5th during and the alternating current
6th period of the voltage in source between the 1st reference voltage and the 2nd reference voltage,
During described 4th, make the 1st switch element and the 4th switching elements conductive, and make the 2nd switch element
Alternately turn on and end with the 3rd switch element, in the conducting of the 2nd switch element and the 3rd switch element
When being switched over cut-off, be provided with the stopping for making the 2nd switch element and the 3rd switch element end simultaneously during,
During described 5th, make the 2nd switch element and the 3rd switching elements conductive, and make the 1st switch element
Alternately turn on and end with the 4th switch element, in the conducting of the 1st switch element and the 4th switch element
When being switched over cut-off, be provided with the stopping for making the 1st switch element and the 4th switch element end simultaneously during,
During described 6th, make the 1st switch element and the 2nd switching elements conductive, and make the 3rd switch element
End with the 4th switch element,
The load will be supplied to after the boost in voltage of the AC power to defined alternating voltage.
4. power conversion device as claimed in claim 3, it is characterised in that
To the switching during the described 6th during the described 4th, and from during the described 5th to during the described 6th switch in institute
The 1st switch element and the 2nd switch element are stated while being carried out when being on.
5. a kind of power conversion device, it is characterised in that
Using the power conversion device described in two groups of claims 1 to any one of claim 4, with three-phase alternating-current supply and three
Phase load is connected by V connections to be formed.
6. a kind of power conversion device, it is characterised in that
Using the power conversion device described in three groups of claims 1 to any one of claim 4, with three-phase alternating-current supply and three
Phase load is connected by Y connections to be formed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/003259 WO2013171800A1 (en) | 2012-05-18 | 2012-05-18 | Power conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104205597A CN104205597A (en) | 2014-12-10 |
| CN104205597B true CN104205597B (en) | 2017-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280071206.2A Active CN104205597B (en) | 2012-05-18 | 2012-05-18 | Power conversion device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9397581B2 (en) |
| EP (1) | EP2852042B1 (en) |
| JP (1) | JP5768934B2 (en) |
| CN (1) | CN104205597B (en) |
| WO (1) | WO2013171800A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9800167B2 (en) * | 2014-02-07 | 2017-10-24 | Abb Schweiz Ag | Multi-phase AC/AC step-down converter for distribution systems |
| JP6485251B2 (en) * | 2015-06-29 | 2019-03-20 | 住友電気工業株式会社 | Conversion device and control method thereof |
| CN107482760B (en) * | 2016-06-08 | 2020-06-30 | 光宝电子(广州)有限公司 | Switching device |
| CN106208726B (en) * | 2016-07-14 | 2018-07-17 | 厦门大学 | A kind of voltage-type Quasi-Z-Source AC-AC converters |
| CN107086795B (en) * | 2017-06-21 | 2023-08-08 | 佛山科学技术学院 | Boost type AC-AC direct converter topology |
| US10811879B2 (en) * | 2017-10-31 | 2020-10-20 | Boise State University | Residential static VAR compensator apparatus and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219987A (en) * | 1996-02-14 | 1997-08-19 | Mitsubishi Electric Corp | Controller for single-phase motor and actuator using controller for single-phase motor thereof |
| JP2003230277A (en) * | 2001-11-27 | 2003-08-15 | Fuji Electric Co Ltd | Control device for power converter |
| JP2003230276A (en) * | 2002-01-30 | 2003-08-15 | Fuji Electric Co Ltd | Control method for power converter |
| JP2006311726A (en) * | 2005-04-28 | 2006-11-09 | Tokyo Electric Power Co Inc:The | Instantaneous voltage drop compensator |
| CN102291005A (en) * | 2010-06-18 | 2011-12-21 | 上海威曼电气科技发展有限公司 | AC chopper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7315151B2 (en) * | 1995-01-11 | 2008-01-01 | Microplanet Inc. | Method and apparatus for electronic power control |
| JP2001100850A (en) * | 1999-09-29 | 2001-04-13 | Kawamura Electric Inc | Ac voltage regulator |
| US9178412B2 (en) * | 2009-01-19 | 2015-11-03 | Daikin Industries, Ltd. | Bidirectional switch circuit configured to conduct current in reverse direction without applying an on-drive signal and power converter including the same |
| WO2012067167A1 (en) | 2010-11-17 | 2012-05-24 | 富士電機株式会社 | Ac-ac converter |
| JP5928865B2 (en) * | 2010-11-18 | 2016-06-01 | 富士電機株式会社 | Control method of non-contact power feeding device |
-
2012
- 2012-05-18 JP JP2014515356A patent/JP5768934B2/en active Active
- 2012-05-18 WO PCT/JP2012/003259 patent/WO2013171800A1/en active Application Filing
- 2012-05-18 CN CN201280071206.2A patent/CN104205597B/en active Active
- 2012-05-18 EP EP12876856.1A patent/EP2852042B1/en active Active
-
2014
- 2014-09-02 US US14/474,872 patent/US9397581B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219987A (en) * | 1996-02-14 | 1997-08-19 | Mitsubishi Electric Corp | Controller for single-phase motor and actuator using controller for single-phase motor thereof |
| JP2003230277A (en) * | 2001-11-27 | 2003-08-15 | Fuji Electric Co Ltd | Control device for power converter |
| JP2003230276A (en) * | 2002-01-30 | 2003-08-15 | Fuji Electric Co Ltd | Control method for power converter |
| JP2006311726A (en) * | 2005-04-28 | 2006-11-09 | Tokyo Electric Power Co Inc:The | Instantaneous voltage drop compensator |
| CN102291005A (en) * | 2010-06-18 | 2011-12-21 | 上海威曼电气科技发展有限公司 | AC chopper |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2852042A1 (en) | 2015-03-25 |
| WO2013171800A1 (en) | 2013-11-21 |
| US9397581B2 (en) | 2016-07-19 |
| JP5768934B2 (en) | 2015-08-26 |
| EP2852042A4 (en) | 2015-11-11 |
| EP2852042B1 (en) | 2017-05-17 |
| US20140368173A1 (en) | 2014-12-18 |
| CN104205597A (en) | 2014-12-10 |
| JPWO2013171800A1 (en) | 2016-01-07 |
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